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1:56
YouTube
Engine Codes
HOW TO FIX P015A OBD II ERROR CODE Oxygen Sensor Delayed Response Bank 1 Sensor 1 - Gas Mileage
Your engine constantly balances air and fuel, but when the upstream oxygen sensor gets lazy, you get code P015A. This code points to a delayed response from the Bank 1 Sensor 1 O2 sensor, meaning it is too slow to tell the computer if the mixture is rich or lean. This lag destroys fuel economy and can eventually damage your catalytic converter ...
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